or if there was any confirmation/greetings letters from F-Secure (after purchase) - does it contain any instructions about (?!).

-> as additional points: does it purchased from F-Secure webstore directly? does license/subscription is activated already - but not possible to login to 'account' (?). or by 'get in to your account' means troubles with license-activation (?)

I feel that if some of users do not able to find proper steps to start use their software - this is, of course, trouble and not good design. Also -> if there is any internal F-Secure troubles -> also not good that user met this before official fix.

The account ID is the same subscription code which you purchased for Freedome (subscription code = account ID for iOS). May I know if you have purchased a multi device subscription or an App store subscription for Freedome?

and if your experience about multiplatform subscription (not the AppStore-based subscription):

Have you searched your email address for the Freedome invoice email? The email should have the subscription information. If you are still having issues our chat/phone support should help you with this.

As mentioned by Ukko, the account ID (konto ID) should be there in the purchase order email sent to you. Could you please check your email for the ID?

If you are still unable to find it, I have asked our Support team to resend your order email which has the account ID. Please let us know if you were able to receive it.

The login option in Freedome is applicable if you have bought Total (which combines SAFE and Freedome). If you have purchased just Freedome, you can validate the product using the license code. You can follow the steps mentioned here if you have a Windows/Mac machine or iOS/Android phone to activate Freedome.